EM-2040 i2c fixes DO NOT MERGE

drivers/regulator/axp20x-regulator.c

@@ -244,6 +244,7 @@ static const struct regulator_desc axp22x_drivevbus_regulator = {
 	.ops		= &axp20x_ops_sw,
 };
 
+/* DCDC ranges shared with AXP813 */
 static const struct regulator_linear_range axp803_dcdc234_ranges[] = {
 	REGULATOR_LINEAR_RANGE(500000, 0x0, 0x46, 10000),
 	REGULATOR_LINEAR_RANGE(1220000, 0x47, 0x4b, 20000),
@@ -426,6 +427,69 @@ static const struct regulator_desc axp809_regulators[] = {
 	AXP_DESC_SW(AXP809, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(6)),
 };
 
+static const struct regulator_desc axp813_regulators[] = {
+	AXP_DESC(AXP813, DCDC1, "dcdc1", "vin1", 1600, 3400, 100,
+		 AXP803_DCDC1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL1, BIT(0)),
+	AXP_DESC_RANGES(AXP813, DCDC2, "dcdc2", "vin2", axp803_dcdc234_ranges,
+			76, AXP803_DCDC2_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+			BIT(1)),
+	AXP_DESC_RANGES(AXP813, DCDC3, "dcdc3", "vin3", axp803_dcdc234_ranges,
+			76, AXP803_DCDC3_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+			BIT(2)),
+	AXP_DESC_RANGES(AXP813, DCDC4, "dcdc4", "vin4", axp803_dcdc234_ranges,
+			76, AXP803_DCDC4_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+			BIT(3)),
+	AXP_DESC_RANGES(AXP813, DCDC5, "dcdc5", "vin5", axp803_dcdc5_ranges,
+			68, AXP803_DCDC5_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+			BIT(4)),
+	AXP_DESC_RANGES(AXP813, DCDC6, "dcdc6", "vin6", axp803_dcdc6_ranges,
+			72, AXP803_DCDC6_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+			BIT(5)),
+	AXP_DESC_RANGES(AXP813, DCDC7, "dcdc7", "vin7", axp803_dcdc6_ranges,
+			72, AXP813_DCDC7_V_OUT, 0x7f, AXP22X_PWR_OUT_CTRL1,
+			BIT(6)),
+	AXP_DESC(AXP813, ALDO1, "aldo1", "aldoin", 700, 3300, 100,
+		 AXP22X_ALDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(5)),
+	AXP_DESC(AXP813, ALDO2, "aldo2", "aldoin", 700, 3300, 100,
+		 AXP22X_ALDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(6)),
+	AXP_DESC(AXP813, ALDO3, "aldo3", "aldoin", 700, 3300, 100,
+		 AXP22X_ALDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL3, BIT(7)),
+	AXP_DESC(AXP813, DLDO1, "dldo1", "dldoin", 700, 3300, 100,
+		 AXP22X_DLDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(3)),
+	AXP_DESC_RANGES(AXP813, DLDO2, "dldo2", "dldoin", axp803_dldo2_ranges,
+			32, AXP22X_DLDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2,
+			BIT(4)),
+	AXP_DESC(AXP813, DLDO3, "dldo3", "dldoin", 700, 3300, 100,
+		 AXP22X_DLDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(5)),
+	AXP_DESC(AXP813, DLDO4, "dldo4", "dldoin", 700, 3300, 100,
+		 AXP22X_DLDO4_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(6)),
+	AXP_DESC(AXP813, ELDO1, "eldo1", "eldoin", 700, 1900, 50,
+		 AXP22X_ELDO1_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(0)),
+	AXP_DESC(AXP813, ELDO2, "eldo2", "eldoin", 700, 1900, 50,
+		 AXP22X_ELDO2_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(1)),
+	AXP_DESC(AXP813, ELDO3, "eldo3", "eldoin", 700, 1900, 50,
+		 AXP22X_ELDO3_V_OUT, 0x1f, AXP22X_PWR_OUT_CTRL2, BIT(2)),
+	/* to do / check ... */
+	AXP_DESC(AXP813, FLDO1, "fldo1", "fldoin", 700, 1450, 50,
+		 AXP803_FLDO1_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(2)),
+	AXP_DESC(AXP813, FLDO2, "fldo2", "fldoin", 700, 1450, 50,
+		 AXP803_FLDO2_V_OUT, 0x0f, AXP22X_PWR_OUT_CTRL3, BIT(3)),
+	/*
+	 * TODO: FLDO3 = {DCDC5, FLDOIN} / 2
+	 *
+	 * This means FLDO3 effectively switches supplies at runtime,
+	 * something the regulator subsystem does not support.
+	 */
+	AXP_DESC_FIXED(AXP813, RTC_LDO, "rtc-ldo", "ips", 1800),
+	AXP_DESC_IO(AXP813, LDO_IO0, "ldo-io0", "ips", 700, 3300, 100,
+		    AXP22X_LDO_IO0_V_OUT, 0x1f, AXP20X_GPIO0_CTRL, 0x07,
+		    AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
+	AXP_DESC_IO(AXP813, LDO_IO1, "ldo-io1", "ips", 700, 3300, 100,
+		    AXP22X_LDO_IO1_V_OUT, 0x1f, AXP20X_GPIO1_CTRL, 0x07,
+		    AXP22X_IO_ENABLED, AXP22X_IO_DISABLED),
+	AXP_DESC_SW(AXP813, SW, "sw", "swin", AXP22X_PWR_OUT_CTRL2, BIT(7)),
+};
+
 static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
 {
 	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
@@ -441,9 +505,10 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
 		step = 75;
 		break;
 	case AXP803_ID:
+	case AXP813_ID:
 		/*
-		 * AXP803 DCDC work frequency setting has the same range and
-		 * step as AXP22X, but at a different register.
+		 * AXP803/AXP813 DCDC work frequency setting has the same
+		 * range and step as AXP22X, but at a different register.
 		 * Fall through to the check below.
 		 * (See include/linux/mfd/axp20x.h)
 		 */
@@ -561,6 +626,14 @@ static int axp20x_set_dcdc_workmode(struct regulator_dev *rdev, int id, u32 work
 		workmode <<= id - AXP803_DCDC1;
 		break;
 
+	case AXP813_ID:
+		if (id < AXP813_DCDC1 || id > AXP813_DCDC7)
+			return -EINVAL;
+
+		mask = AXP22X_WORKMODE_DCDCX_MASK(id - AXP813_DCDC1);
+		workmode <<= id - AXP813_DCDC1;
+		break;
+
 	default:
 		/* should not happen */
 		WARN_ON(1);
@@ -579,8 +652,8 @@ static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
 	u32 reg = 0;
 
 	/*
-	 * Currently in our supported AXP variants, only AXP803 and AXP806
-	 * have polyphase regulators.
+	 * Currently in our supported AXP variants, only AXP803, AXP806,
+	 * and AXP813 have polyphase regulators.
 	 */
 	switch (axp20x->variant) {
 	case AXP803_ID:
@@ -590,7 +663,7 @@ static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
 		case AXP803_DCDC3:
 			return !!(reg & BIT(6));
 		case AXP803_DCDC6:
-			return !!(reg & BIT(7));
+			return !!(reg & BIT(5));
 		}
 		break;
 
@@ -608,6 +681,17 @@ static bool axp20x_is_polyphase_slave(struct axp20x_dev *axp20x, int id)
 		}
 		break;
 
+	case AXP813_ID:
+		regmap_read(axp20x->regmap, AXP803_POLYPHASE_CTRL, &reg);
+
+		switch (id) {
+		case AXP803_DCDC3:
+			return !!(reg & BIT(6));
+		case AXP803_DCDC6:
+			return !!(reg & BIT(5));
+		}
+		break;
+
 	default:
 		return false;
 	}
@@ -656,6 +740,12 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
 		regulators = axp809_regulators;
 		nregulators = AXP809_REG_ID_MAX;
 		break;
+	case AXP813_ID:
+		regulators = axp813_regulators;
+		nregulators = AXP813_REG_ID_MAX;
+		drivevbus = of_property_read_bool(pdev->dev.parent->of_node,
+						  "x-powers,drive-vbus-en");
+		break;
 	default:
 		dev_err(&pdev->dev, "Unsupported AXP variant: %ld\n",
 			axp20x->variant);
@@ -677,6 +767,10 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
 		if (axp20x_is_polyphase_slave(axp20x, i))
 			continue;
 
+		/* Support for AXP813's FLDO3 is not implemented */
+		if (axp20x->variant == AXP813_ID && i == AXP813_FLDO3)
+			continue;
+
 		/*
 		 * Regulators DC1SW and DC5LDO are connected internally,
 		 * so we have to handle their supply names separately.

include/linux/mfd/axp20x.h

@@ -131,6 +131,9 @@ enum axp20x_variants {
 #define AXP803_DCDC6_V_OUT		0x25
 #define AXP803_DCDC_FREQ_CTRL		0x3b
 
+/* Other DCDC regulator control registers are the same as AXP803 */
+#define AXP813_DCDC7_V_OUT		0x26
+
 /* Interrupt */
 #define AXP152_IRQ1_EN			0x40
 #define AXP152_IRQ2_EN			0x41